EP1747357B1 - Exhaust system for a drive train constituted by a transmission and an engine - Google Patents

Exhaust system for a drive train constituted by a transmission and an engine Download PDF

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Publication number
EP1747357B1
EP1747357B1 EP05716060.8A EP05716060A EP1747357B1 EP 1747357 B1 EP1747357 B1 EP 1747357B1 EP 05716060 A EP05716060 A EP 05716060A EP 1747357 B1 EP1747357 B1 EP 1747357B1
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EP
European Patent Office
Prior art keywords
exhaust gas
exhaust system
transmission
gas system
engine
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EP05716060.8A
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German (de)
French (fr)
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EP1747357A1 (en
Inventor
Günter WEIMERT
Harald Mann
Markus Menzel
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication of EP1747357A1 publication Critical patent/EP1747357A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel

Definitions

  • the invention relates to an exhaust system for a drive unit formed by gear and motor according to the preamble of patent claim 1.
  • a suspension device for a dual-flow exhaust system of a motor vehicle which consists of a central holding part, which are mounted elastically, leading to the exhaust pipes of the exhaust system carrying legs.
  • the object of the invention is to make such a generic suspension durable and stable despite occurring in the motor vehicle unit vibrations.
  • a fastening device for an exhaust pipe to a vehicle component in which a console of the fastening device comprises a shell element in the form of a cylinder segment, which is attachable to a substantially rectilinear portion of an exhaust pipe by means of holding the exhaust pipe holding means.
  • the US 5,921,080 describes a catalyst for a small gasoline engine, wherein an exhaust pipe is passed through an opening in a catalyst housing, wherein the catalyst housing is held by means of a multi-part retaining bracket on the vehicle chassis.
  • the US 5,880,413 describes an arrangement for mounting an exhaust muffler for trucks.
  • the fastening device according to the invention for the exhaust system consists of a holding part with support legs, which are fastened via a clamp construction on the catalyst housing of the exhaust system. Characterized in that the catalyst housing are made substantially larger in diameter than the exhaust pipes, a stable and permanent suspension of the entire exhaust system can be achieved with this type of attachment.
  • Another stabilizing and the suspension of the entire exhaust system serving measure is that at least part of the catalyst housing is integrated in a muffler of the exhaust system.
  • the support legs, to which the exhaust system is attached, are advantageously formed as a lower continuous strut, which is supported by two upper, respectively the holding part and the clamps connecting struts.
  • the two upper struts are each connected to a damping element, which are tuned so that the occurring aggregate - or exhaust system vibrations are effectively reduced.
  • a holder is provided in each case, to which the lower and the two upper struts are fastened by clamping or screwing accordingly.
  • the front side screwed to the gear unit of the drive unit holding part is designed as a cast or as a stamped part in the form of a one-piece support plate.
  • the twin-flow exhaust system for a 6-cylinder engine has in each case an exhaust manifold 2 and 4, which is fastened respectively with its flange portion 6 and 8 on the cylinder head of a motor unit, not shown.
  • the three individual tubes of the exhaust manifold 2 and 4 open into an exhaust manifold 10 and 12, to which a housing 14 or 16 of a starting catalyst connects.
  • an exhaust pipe 18 and 20 is flanged, leading to a respective housing 22 and 24, in which a main catalyst is added.
  • the two main catalytic converters 22, 24 are respectively received in a muffler housing 26 and 28 and partially integrated therein. Both rear muffler housings 26 and 28 are fluidically connected via an upper connecting tube 30 and a lower connecting tube 32 fluidly.
  • the lower connecting pipe 32 is formed as a T-piece of pipe, on the free pipe an exhaust pipe 34 is attached.
  • a fastening device 36 is provided, which has a holding part, which is referred to below as a support plate 38.
  • a lower tube strut 42 is fixed by means of three pipe clamps 40a, b, c, at the left and right support legs 42a and 42b, a mounting bracket 44 and 46 respectively surrounding the catalyst housing 22 and 24 is provided.
  • Two cup-shaped retaining plates 48 and 50 for the two mounting clamps 44 and 46 are screwed to a holder 52 and 54, respectively by one of the holder 52, 54 out shaped bearing bush 56 and 58 on the respective end of the lower tube strut 42 and .,
  • the support legs 42a, 42b are clamped attached.
  • the clamping between the two components is generated by the fastening means 60, with which at the same time the retaining plate 48 and 50 for the mounting clamps 44 and 46 on the holder 52 and 54 is attached.
  • the two holders 52 and 54 also each have an upper bearing bushing 62 and 64, each serving to receive one end of an upper tension strut 66 and 68, respectively.
  • the other end of the two upper tie rods 66, 68 is screwed via a damping element 70 and 72 on the support plate 38.
  • the two damping elements 70, 72 are designed as bushings in which the upper tension strut 66, 68 is elastically mounted or secured in rubber elements.
  • the tension acting on the two upper tie rods 66, 68 can be adjusted;
  • the end of the upper tension strut 66, 68 accommodated in the upper bearing bush 62, 64 has a thread which is screwed into the bearing bush 62, 64.
  • the screw is thereby secured by a corresponding lock nut 74 and 76.
  • the two clamps 44, 46 fastened to the catalyst housing 22, 24 are each secured by a clamp 78 or 80.
  • Trained as a cast or stamped part support plate 38 has mounting holes 82 which serve the frontal attachment of the support plate 38 on the housing of a transmission, not shown.
  • the fastening device 36 for the exhaust system is provided, for example, for the Porsche Boxster model, which has a center motor assembly, in which - seen in the direction of travel - the engine is arranged in front of the transmission.
  • the described fastening device for the exhaust system can also be attached to the motor housing, chassis or the body of the motor vehicle.

Description

Die Erfindung betrifft eine Abgasanlage für eine durch Getriebe und Motor gebildete Antriebseinheit nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an exhaust system for a drive unit formed by gear and motor according to the preamble of patent claim 1.

Aus der DE 40 32 431 C1 ist eine Aufhängevorrichtung für eine zweiflutige Abgasanlage eines Kraftfahrzeuges bekannt, die aus einem zentralen Halteteil besteht, an denen elastisch gelagert, zu den Abgasrohren der Abgasanlage führende Tragschenkel befestigt sind.From the DE 40 32 431 C1 a suspension device for a dual-flow exhaust system of a motor vehicle is known, which consists of a central holding part, which are mounted elastically, leading to the exhaust pipes of the exhaust system carrying legs.

Aufgabe der Erfindung ist es, eine derartige gattungsgemäße Aufhängevorrichtung trotz der im Kraftfahrzeug auftretenden Aggregateschwingungen dauerhaltbar und stabil auszubilden.The object of the invention is to make such a generic suspension durable and stable despite occurring in the motor vehicle unit vibrations.

Aus der DE 198 15 705 A1 ist weiterhin eine Befestigungsvorrichtung für ein Abgasrohr an einem Fahrzeugbauteil bekannt, bei der eine Konsole der Befestigungsvorrichtung ein Schalenelement in Form eines Zylindersegmentes aufweist, das an einem im wesentlichen geradlinigen Abschnitt eines Abgasrohres mit Hilfe von das Abgasrohr umgreifenden Haltemitteln befestigbar ist.From the DE 198 15 705 A1 Furthermore, a fastening device for an exhaust pipe to a vehicle component is known, in which a console of the fastening device comprises a shell element in the form of a cylinder segment, which is attachable to a substantially rectilinear portion of an exhaust pipe by means of holding the exhaust pipe holding means.

Die US 5,921,080 beschreibt einen Katalysator für einen kleinen Ottomotor, wobei ein Abgasrohr durch eine Öffnung in ein Katalysatorgehäuse geführt wird, wobei das Katalysatorgehäuse mittels eines mehrteiligen Haltebügels am Fahrzeugchassis gehalten wird.The US 5,921,080 describes a catalyst for a small gasoline engine, wherein an exhaust pipe is passed through an opening in a catalyst housing, wherein the catalyst housing is held by means of a multi-part retaining bracket on the vehicle chassis.

Die US 5,880,413 beschreibt eine Anordnung zur Befestigung eines Abgasschalldämpfers für Lastkraftwagen.The US 5,880,413 describes an arrangement for mounting an exhaust muffler for trucks.

Die genannte Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst.The above object is solved by the features specified in claim 1.

Die erfindungsgemäße Befestigungsvorrichtung für die Abgasanlage besteht aus einem Halteteil mit Tragschenkeln, die über eine Schellenkonstruktion am Katalysatorgehäuse der Abgasanlage befestigt sind. Dadurch, dass das Katalysatorgehäuse im Durchmesser wesentlich größer als die Abgasrohre ausgeführt sind, kann mit dieser Art der Befestigung eine stabile und dauerhafte Aufhängung der gesamten Abgasanlage erreicht werden.The fastening device according to the invention for the exhaust system consists of a holding part with support legs, which are fastened via a clamp construction on the catalyst housing of the exhaust system. Characterized in that the catalyst housing are made substantially larger in diameter than the exhaust pipes, a stable and permanent suspension of the entire exhaust system can be achieved with this type of attachment.

Durch die in den Unteransprüchen aufgeführten Merkmale und Maßnahmen sind weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Abgasanlage möglich.The features and measures listed in the dependent claims further advantageous embodiments and refinements of the exhaust system are possible.

Eine weitere stabilisierende und der Aufhängung der gesamten Abgasanlage dienende Maßnahme besteht darin, dass zumindest ein Teil des Katalysatorgehäuses in einem Endschalldämpfer der Abgasanlage integriert ist.Another stabilizing and the suspension of the entire exhaust system serving measure is that at least part of the catalyst housing is integrated in a muffler of the exhaust system.

Die Tragschenkel, an denen die Abgasanlage befestigt ist, sind auf vorteilhafte Art und Weise als eine untere durchgehende Strebe ausgebildet, die durch zwei obere, jeweils das Halteteil und die Schellen verbindende Streben abgestützt ist.The support legs, to which the exhaust system is attached, are advantageously formed as a lower continuous strut, which is supported by two upper, respectively the holding part and the clamps connecting struts.

Die beiden oberen Streben sind mit jeweils einem Dämpfungselement verbunden, die so abgestimmt sind, dass die auftretenden Aggregate - bzw. Abgasanlagenschwingungen Wirksam reduzierbar sind.The two upper struts are each connected to a damping element, which are tuned so that the occurring aggregate - or exhaust system vibrations are effectively reduced.

Für die Anbindung der Befestigungsschelle an die untere und die beiden oberen Streben ist jeweils ein Halter vorgesehen, an dem die untere und die beiden oberen Streben durch Klemmung oder Verschraubung entsprechend befestigt sind.For the connection of the mounting clamp to the lower and the two upper struts, a holder is provided in each case, to which the lower and the two upper struts are fastened by clamping or screwing accordingly.

Das stirnseitig am Getriebe der Antriebseinheit verschraubte Halteteil ist als Guss- oder als Stanzteil in Form einer einstückigen Trägerplatte ausgebildet.The front side screwed to the gear unit of the drive unit holding part is designed as a cast or as a stamped part in the form of a one-piece support plate.

In der Zeichnung wird ein Ausführungsbeispiel der Erfindung gezeigt, das nachstehend näher beschrieben ist.In the drawing, an embodiment of the invention is shown, which is described in more detail below.

Es zeigen

Fig. 1
eine perspektivische Darstellung einer Abgasanlage mit einer Befestigungseinrichtung,
Fig. 2
eine zweite perspektivische Ansicht der Abgasanlage,
Fig. 3
eine erste perspektivische Seitenansicht der Befestigungsvorrichtung und
Fig. 4
eine zweite perspektivische Darstellung der Befestigungseinrichtung.
Show it
Fig. 1
a perspective view of an exhaust system with a fastening device,
Fig. 2
a second perspective view of the exhaust system,
Fig. 3
a first perspective side view of the fastening device and
Fig. 4
a second perspective view of the fastening device.

Die zweiflutig ausgebildete Abgasanlage für einen 6-Zylinder-Motor weist jeweils einen Abgaskrümmer 2 und 4 auf, der jeweils mit seinem Flanschabschnitt 6 bzw. 8 am Zylinderkopf einer nicht dargestellten Motoreinheit befestigt ist. Die drei Einzelrohre des Abgaskrümmers 2 und 4 münden in ein Abgassammelrohr 10 bzw. 12 ein, an das sich ein Gehäuse 14 bzw. 16 eines Startkatalysators anschließt. An die beiden Startkatalysatoren 14, 16 ist jeweils ein Abgasrohr 18 bzw. 20 angeflanscht, die zu jeweils einem Gehäuse 22 bzw. 24 führen, in denen ein Hauptkatalysator aufgenommen ist. Die beiden Hauptkatalysatoren 22, 24 sind jeweils in einem Endschalldämpfergehäuse 26 bzw. 28 aufgenommen bzw. teilweise darin integriert. Beide Endschalldämpfergehäuse 26 und 28 sind strömungstechnisch über ein oberes Verbindungsrohr 30 und ein unteres Verbindungsrohr 32 strömungstechnisch miteinander verbunden. Das untere Verbindungsrohr 32 ist dabei als T-Rohrstück ausgebildet, auf dessen freien Stutzen eine Abgasrohrblende 34 befestigt ist.The twin-flow exhaust system for a 6-cylinder engine has in each case an exhaust manifold 2 and 4, which is fastened respectively with its flange portion 6 and 8 on the cylinder head of a motor unit, not shown. The three individual tubes of the exhaust manifold 2 and 4 open into an exhaust manifold 10 and 12, to which a housing 14 or 16 of a starting catalyst connects. To the two start catalysts 14, 16, respectively, an exhaust pipe 18 and 20 is flanged, leading to a respective housing 22 and 24, in which a main catalyst is added. The two main catalytic converters 22, 24 are respectively received in a muffler housing 26 and 28 and partially integrated therein. Both rear muffler housings 26 and 28 are fluidically connected via an upper connecting tube 30 and a lower connecting tube 32 fluidly. The lower connecting pipe 32 is formed as a T-piece of pipe, on the free pipe an exhaust pipe 34 is attached.

Zur Aufhängung bzw. Befestigung der gesamten Abgasanlage ist eine Befestigungsvorrichtung 36 vorgesehen, die ein Halteteil aufweist, das im folgenden als Trägerplatte 38 bezeichnet ist. An der Trägerplatte 38 ist mit Hilfe von drei Rohrschellen 40a,b,c eine untere Rohrstrebe 42 befestigt, an dessen linken bzw. rechten Tragschenkel 42a bzw. 42b eine das Katalysatorgehäuse 22 bzw. 24 umgreifende Befestigungsschelle 44 bzw. 46 vorgesehen ist. Zwei schalenförmig ausgebildete Haltebleche 48 und 50 für die beiden Befestigungsschellen 44 und 46 sind an einem Halter 52 bzw. 54 verschraubt, die durch jeweils eine aus dem Halter 52, 54 heraus geformte Lagerbuchse 56 bzw. 58 auf das jeweilige Ende der unteren Rohrstrebe 42 bzw. der Tragschenkel 42a,42b klemmend aufgesteckt sind. Die Klemmung zwischen beiden Bauteilen wird dabei durch die Befestigungsmittel 60 erzeugt, mit denen gleichzeitig das Halteblech 48 bzw. 50 für die Befestigungsschellen 44 und 46 am Halter 52 bzw. 54 befestigt ist. Die beiden Halter 52 und 54 weisen darüber hinaus jeweils eine obere Lagerbuchse 62 und 64 auf, die jeweils der Aufnahme eines Ende einer oberen Zugstrebe 66 bzw. 68 dienen. Das andere Ende der beiden oberen Zugstreben 66, 68 ist über ein Dämpfungselement 70 und 72 an der Trägerplatte 38 verschraubt. Die beiden Dämpfungselemente 70, 72 sind als Buchsen ausgebildet, in denen die obere Zugstrebe 66, 68 in Gummielementen elastisch gelagert bzw. befestigt ist. Die auf die beiden oberen Zugstreben 66, 68 wirkende Zugspannung kann dabei eingestellt werden; dazu weist das in der oberen Lagerbuchse 62, 64 aufgenommene Ende der oberen Zugstrebe 66, 68 ein Gewinde auf, das in der Lagerbuchse 62, 64 eingeschraubt ist. Die Verschraubung wird dabei durch eine entsprechende Kontermutter 74 und 76 gesichert. Die beiden am Katalysatorgehäuse 22, 24 befestigten Schellen 44, 46 werden jeweils über eine Spannschelle 78 bzw. 80 gesichert.For the suspension or attachment of the entire exhaust system, a fastening device 36 is provided, which has a holding part, which is referred to below as a support plate 38. On the support plate 38, a lower tube strut 42 is fixed by means of three pipe clamps 40a, b, c, at the left and right support legs 42a and 42b, a mounting bracket 44 and 46 respectively surrounding the catalyst housing 22 and 24 is provided. Two cup-shaped retaining plates 48 and 50 for the two mounting clamps 44 and 46 are screwed to a holder 52 and 54, respectively by one of the holder 52, 54 out shaped bearing bush 56 and 58 on the respective end of the lower tube strut 42 and ., The support legs 42a, 42b are clamped attached. The clamping between the two components is generated by the fastening means 60, with which at the same time the retaining plate 48 and 50 for the mounting clamps 44 and 46 on the holder 52 and 54 is attached. The two holders 52 and 54 also each have an upper bearing bushing 62 and 64, each serving to receive one end of an upper tension strut 66 and 68, respectively. The other end of the two upper tie rods 66, 68 is screwed via a damping element 70 and 72 on the support plate 38. The two damping elements 70, 72 are designed as bushings in which the upper tension strut 66, 68 is elastically mounted or secured in rubber elements. The tension acting on the two upper tie rods 66, 68 can be adjusted; For this purpose, the end of the upper tension strut 66, 68 accommodated in the upper bearing bush 62, 64 has a thread which is screwed into the bearing bush 62, 64. The screw is thereby secured by a corresponding lock nut 74 and 76. The two clamps 44, 46 fastened to the catalyst housing 22, 24 are each secured by a clamp 78 or 80.

Die als Guss- oder Stanzteil ausgebildete Trägerplatte 38 weist Befestigungsöffnungen 82, die der stirnseitigen Befestigung der Trägerplatte 38 am Gehäuse eines nicht dargestellten Getriebes dienen. Die Befestigungsvorrichtung 36 für die Abgasanlage ist beispielsweise für das Porsche Boxster- Modell vorgesehen, das eine Mittelmotoranordnung aufweist, bei dem - in Fahrtrichtung gesehen - der Motor vor dem Getriebe angeordnet ist. Selbstverständlich kann die beschriebene Befestigungsvorrichtung für die Abgasanlage auch am Motorgehäuse, Fahrwerk oder der Karosserie des Kraftfahrzeuges befestigt werden.Trained as a cast or stamped part support plate 38 has mounting holes 82 which serve the frontal attachment of the support plate 38 on the housing of a transmission, not shown. The fastening device 36 for the exhaust system is provided, for example, for the Porsche Boxster model, which has a center motor assembly, in which - seen in the direction of travel - the engine is arranged in front of the transmission. Of course, the described fastening device for the exhaust system can also be attached to the motor housing, chassis or the body of the motor vehicle.

Claims (5)

  1. Exhaust gas system for a drive unit which is formed by transmission and engine, having tubes (2, 4, 10, 12, 18, 20) which conduct exhaust gas and at least one silencer and catalytic converter housing (14, 16, 22, 24, 26, 28), and having a holding part (38) which can be fastened to the transmission and/or engine and on the supporting limbs of which the exhaust gas system can be fastened or suspended, characterized in that a fastening clip (44, 46) for receiving a catalytic converter housing (22, 24) is provided at the end of the respective supporting limb (42a, 42b), the supporting limbs (42a, 42b) being configured as a lower continuous strut (42) which is supported by two upper struts (66, 68) which in each case connect the holding part (38) and the fastening clips (44, 46).
  2. Exhaust gas system according to Claim 1, characterized in that the catalytic converter housing (22, 24) is integrated at least partially into the silencer housing (26, 28).
  3. Exhaust gas system according to Claim 1 or 2, characterized in that in each case one damping element (70, 72) is provided at that end of the two upper struts (66, 68) which is assigned to the holding part (38).
  4. Exhaust gas system according to Claim 1 or 3, characterized in that in each case one holder (52, 54) is provided for the fastening clips (44, 46), to which holder (52, 54) the lower and the two upper struts (42, 66, 68) are fastened.
  5. Exhaust gas system according to one of the preceding claims, characterized in that the holding part (38) is configured as a single-piece carrier plate which is screwed to the transmission of the drive unit with the aid of fastening means (82).
EP05716060.8A 2004-05-07 2005-03-15 Exhaust system for a drive train constituted by a transmission and an engine Active EP1747357B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004022720A DE102004022720A1 (en) 2004-05-07 2004-05-07 Exhaust system for a drive unit formed by gear and motor
PCT/EP2005/002726 WO2005113956A1 (en) 2004-05-07 2005-03-15 Exhaust system for a drive train constituted by a transmission and an engine

Publications (2)

Publication Number Publication Date
EP1747357A1 EP1747357A1 (en) 2007-01-31
EP1747357B1 true EP1747357B1 (en) 2016-02-24

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US (1) US7490465B2 (en)
EP (1) EP1747357B1 (en)
JP (1) JP4546523B2 (en)
DE (1) DE102004022720A1 (en)
WO (1) WO2005113956A1 (en)

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WO2005113956A1 (en) 2005-12-01
DE102004022720A1 (en) 2005-11-24
US20070220872A1 (en) 2007-09-27
JP2007536460A (en) 2007-12-13
EP1747357A1 (en) 2007-01-31
US7490465B2 (en) 2009-02-17
JP4546523B2 (en) 2010-09-15

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